Table 4. Parasite densities of patients with Plasmodium knowlesi monoinfection and co-infection with other malaria species, Thailand, October 2008–September 2009*.
| Category | Parasite density, parasites/μL† |
||
|---|---|---|---|
| Geometric mean | Ratio of geometric means‡ | Range | |
|
P. knowlesi monoinfection, n = 10 |
4,165 |
NA |
0–145,000 |
| P. knowlesi co-infection with | |||
| P. falciparum, n = 11 | 1,632 | 2.55 | 440–6,560 |
| P. vivax, n = 9 | 1,686 | 2.47 | 320–13,120 |
|
P. falciparum and P. vivax, n = 5 |
487 |
8.55 |
320–1,520 |
| All co-infections, n = 25 | 1,271 | 3.28 | 320–13,120 |
*NA, not applicable. †Parasite densities between categories were not significantly different (p>0.05, by Mann-Whitney U test). ‡Ratio of parasite densities of monoinfection to co-infection.